<template>
	<div class="list" ref='wrapper'>
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">
						{{this.currentCity}}
						<!-- {{this.$store.state.city}} -->
					</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div class="button-wrapper" v-for='item in hotCities' :key='item.id' @click='handleCityClick(item.name)'>
						<div class="button">{{item.name}}</div>
					</div>
				</div>
			</div>
			<div class="area" v-for='(item,key) in cities' :key='key' :ref='key'>
				<div class="title border-topbottom">{{key}}</div>
				<div class="item-list"> 
					<div class="item border-bottom" v-for='innerItem in item' :key='innerItem.id' @click='handleCityClick(innerItem.name)'>{{ innerItem.name }} </div>
				</div>
			</div>
		</div>
	</div>
</template>

<script>
	import Bscroll from 'better-scroll'
	import { mapState,mapMutations } from 'vuex'
	export default{
		name: 'List',
		props:{
			cities:Object,
			hotCities:Array,
			letter:String
		},
		mounted () {
			this.scroll = new Bscroll(this.$refs.wrapper)
		},
		methods:{
			handleCityClick (city) {
				// this.$store.dispatch('changeCity',city)
				// this.$store.commit('changeCity',city)
				this.changeCity(city)
				//编程式跳转
				this.$router.push('/')
				// alert(city)
			},
			...mapMutations(['changeCity'])
		},
		watch:{
			letter(){
				if(this.letter){
					const element = this.$refs[this.letter][0]
					this.scroll.scrollToElement(element)
				}
				// console.log(this.letter)
			}
		},
		computed: {
			...mapState({
				currentCity:'city'
			})
		}
	}
</script>

<style lang= 'stylus' scoped>
	.border-topbottom
		&:before
			border-color:#ccc
		&:after
			border-color:#ccc
	.border-bottom
		&:before
			border-color:#ccc
	.list
		overflow:hidden
		position:absolute
		top:1.58rem
		left:0
		right:0
		bottom:0
		// background:red
		.title
			line-height:.54rem
			background:#eee
			padding-left:.2rem
			color:#666
			font-size:.26rem
		.button-list
			padding:.1rem .6rem .1rem .1rem
			overflow:hidden
			.button-wrapper
				width:33.33%
				float:left
				.button
					margin:.1rem
					text-align:center
					padding:.1rem
					border:.02rem solid #ccc
					border-raduis:.3rem
		.item-list
			.item
				line-height:.76rem
				padding-left:.2rem	
				
</style>